Reactions of 2-alkoxyfurans with nonacarbonyldi-iron or dodecacarbonyltriruthenium giving binuclear vinylcarbene complexes and a 2-pyrone complex: a novle precursor for α,β-unsaturated alkylidene ligands and an unusual carbonylation of the furans

Abstract

2-Alkoxyfurans react with nonacarbonyldi-iron or dodecacarbonyltriruthenium affording binuclear α,β-unsaturated alklidene complexes and 2-pyrone derivatives; both reactions could be explained by assuming mononuclear η³-vinylcarbene complexes as reaction intermediates.